perf: 完善订单管理

packages/app/src/pages/card/detail.vue

@@ -130,6 +130,7 @@ import type { CardType, CreateOrderResponse } from '@mp-pilates/shared'
 import { CardTypeCategory } from '@mp-pilates/shared'
 import { get, post } from '../../utils/request'
 import { formatPrice } from '../../utils/format'
+import { getSystemLayout } from '../../utils/system'
 import { useUserStore } from '../../stores/user'
 import CustomNavBar from '../../components/CustomNavBar.vue'
 
@@ -278,8 +279,7 @@ async function doPurchase() {
 
 // ─── Lifecycle ────────────────────────────────────────────
 onMounted(() => {
-  const sys = uni.getSystemInfoSync()
-  navBarHeight.value = `${(sys.statusBarHeight ?? 20) + Math.round(88 * sys.windowWidth / 750)}px`
+  navBarHeight.value = `${getSystemLayout().navBarHeight}px`
 
   const pages = getCurrentPages()
   const current = pages[pages.length - 1]